S
M
T
W
T
F
S
26
91°
72°
27
90°
71°
28
88°
72°
29
90°
75°
30
92°
76°
31
92°
77°
1
91°
76°
2
92°
74°
3
92°
74°
4
91°
73°
5
90°
75°
6
91°
73°
7
90°
72°
8
92°
74°
9
92°
76°
10
91°
75°
11
93°
74°
12
92°
74°
13
92°
73°
14
91°
74°
15
91°
75°
16
90°
73°
17
89°
74°
18
88°
76°
19
91°
76°
20
92°
75°
21
92°
75°
22
90°
74°
23
89°
73°
24
88°
74°
25
91°
75°
26
91°
74°
27
90°
74°
28
90°
75°
29
89°
74°
30
Hist. Avg.
89°
73°
31
Hist. Avg.
89°
73°
1
Hist. Avg.
89°
73°
2
Hist. Avg.
89°
72°
3
Hist. Avg.
89°
72°
4
Hist. Avg.
88°
72°
5
Hist. Avg.
88°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Slidell
Slidell's August 2026 forecast shows daily high temperatures ranging from 88° to 93°, with overnight lows between 71° and 77°. The average high for August is 91° with an average low of 74°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Slidell. See also: September | October | November.
